GreenGenStorage, LLC; Notice of Application Accepted for Filing and Soliciting Motions To Intervene and Protests

Take notice that the following hydroelectric application has been filed with the Commission and is available for public inspection.

a. Type of Application: Major Original License.

b. Project No.: 14796-002.

c. Date filed: March 14, 2025.

d. Applicant: GreenGenStorage, LLC (GreenGen).

e. Name of Project: Mokelumne Pumped Storage Project (Mokelumne Project or project).

f. Location: The proposed project would be located near the town of Jackson, in Amador and Calaveras counties, California. The project would occupy 85.7 acres of federal land administered by the US Forest Service.

g. Filed Pursuant to: Federal Power Act 16 U.S.C. 791(a)-825(r).

h. Applicant Contact: Mr. Nicholas Sher, GreenGenStorage, LLC, 4900 Shattuck Avenue, P.O. Box 3833, Oakland, CA 94609; (209) 217-1425; email: nicholas@greengenstorage.com.

i. FERC Contact: Rebecca Kipp at (202) 502-8846 or rebecca.kipp@ferc.gov.

j. Deadline for filing motions to intervene and protests: on or before 5:00 p.m. Eastern Time on October 26, 2026. Reply comments are due: on or before 5:00 p.m. Eastern Time on December 8, 2026.

The Commission strongly encourages electronic filing. Please file motions to intervene and protests using the Commission's eFiling system at ferconline.ferc.gov/​FERCOnline.aspx. Commenters can submit brief comments up to 10,000 characters, without prior registration, using the eComment system at ferconline.ferc.gov/​QuickComment.aspx. For assistance, please contact FERC Online Support at FERCOnlineSupport@ferc.gov, (866) 208-3676 (toll free), or (202) 502-8659 (TTY). In lieu of electronic filing, you may submit a paper copy. Submissions sent via the U.S. Postal Service must be addressed to: Debbie-Anne A. Reese, Secretary, Federal Energy Regulatory Commission, 888 First Street NE, Room 1A, Washington, DC 20426. Submissions sent via any other carrier must be addressed to: Debbie-Anne A. Reese, Secretary, Federal Energy ( printed page 55579) Regulatory Commission, 12225 Wilkins Avenue, Rockville, Maryland 20852. All filings must clearly identify the project name and docket number on the first page: Mokelumne Pumped Storage Project (P-14796-002).

The Commission's Rules of Practice require all intervenors filing documents with the Commission to serve a copy of that document on each person on the official service list for the project. Further, if an intervenor files comments or documents with the Commission relating to the merits of an issue that may affect the responsibilities of a particular resource agency, they must also serve a copy of the document on that resource agency.

k. This application has been accepted for filing but is not ready for environmental analysis at this time.

l. The proposed Mokelumne Pumped Storage Project would utilize the existing Pacific Gas and Electric's (PG&E) reservoirs licensed under Mokelumne River Project No. 137 with the following: (1) a 979-foot-long, 253-foot-high concrete faced rock filled dam and an 865-foot-long, 149-foot-high concrete faced rock filled dam impounding a 52,025-acre-foot Lower Bear River Reservoir (LBRR) to be used as the upper reservoir; (2) a 1,257-foot long and 332-foot high concrete faced, rock filled dam impounding a 141,600-acre-foot Salt Spring Reservoir (SSR) to be used as the lower reservoir;

The proposed project would consist of the following: (1) an upper reservoir with a submerged screened lake tap within the LBRR with a 100-foot diameter, 30-foot high intake riser at an elevation of 5,680.3 feet NAVD88, a 50-foot diameter intake lake tap at an elevation of 5,680.3 feet NAVD88 with a 23-foot by 23-foot fixed wheel gate and 23-foot by 23-foot stoplogs; (2) a lower reservoir (SSR) with a submerged screened lake tap with an 80-foot diameter, 30-foot high intake riser at an elevation of 3,693.5 feet NAVD88, a 40-foot diameter intake lake tap at an elevation of 3,693.5 feet NAVD88, and a 22-foot butterfly valve for the lower intake; (3) a 10,700-foot long, 22-foot-diameter low pressure headrace tunnel (tunnel 1); (4) a 1560-foot-long, 22-foot diameter pressure shaft with a 550-foot-long, 30-foot diameter surge shaft daylighting on the surface; (5) a 4,700-foot long, 22-foot diameter pressurized water conveyance system (tunnel 2); (6) a 260-foot long, 70-foot wide, 163-foot high underground cavern containing two reversible Francis turbines with a spare bay for the potential installation of a third unit in the future with a total generating capacity of 400 megawatts; (7) a 2,200-foot long, 22-foot diameter low pressure tailrace (tunnel 3); (8) a 4,100-foot-long, 18-foot diameter utility tunnel that would transmit power to the 230-kilovolt switchyard serving as the interconnection point with the existing Salt Springs substation; and (9) appurtenant facilities.

m. A copy of the application is available for review via the internet through the Commission's Home Page ( www.ferc.gov), using the “eLibrary” link. Enter the docket number, excluding the last three digits in the docket number field, to access the document. For assistance, contact FERC at FERCOnlineSupport@ferc.gov or call toll free, (886) 208-3676 or TTY (202) 502-8659.

You may also register online at ferconline.ferc.gov/​FERCOnline.aspx to be notified via email of new filings and issuances related to this or other pending projects. For assistance, contact FERC Online Support.

For public inquiries and assistance with making filings such as interventions, comments, or requests for rehearing, contact the Office of Public Participation at (202) 502-6595 or OPP@ferc.gov.

n. Any qualified applicant desiring to file a competing application must submit to the Commission, on or before the specified intervention deadline date, a competing development application, or a notice of intent to file such an application. Submission of a timely notice of intent allows an interested person to file the competing development application no later than 120 days after the specified intervention deadline date. Applications for preliminary permits will not be accepted in response to this notice.

A notice of intent must specify the exact name, business address, and telephone number of the prospective applicant, and must include an unequivocal statement of intent to submit a development application. A notice of intent must be served on the applicant(s) named in this public notice.

Anyone may submit a protest or a motion to intervene in accordance with the requirements of Rules of Practice and Procedure, 18 CFR 385.210, 385.211, and 385.214. In determining the appropriate action to take, the Commission will consider all protests filed, but only those who file a motion to intervene in accordance with the Commission's Rules may become a party to the proceeding. Any protests or motions to intervene must be received on or before the specified deadline date for the particular application.

All filings must (1) bear in all capital letters the title “PROTEST” or “MOTION TO INTERVENE,” “NOTICE OF INTENT TO FILE COMPETING APPLICATION,” or “COMPETING APPLICATION;” (2) set forth in the heading the name of the applicant and the project number of the application to which the filing responds; (3) furnish the name, address, and telephone number of the person protesting or intervening; and (4) otherwise comply with the requirements of 18 CFR 385.2001 through 385.2005. Agencies may obtain copies of the application directly from the applicant. A copy of any protest or motion to intervene must be served upon each representative of the applicant specified in the particular application.